2126490972 has 24 divisors (see below), whose sum is σ = 4963256592. Its totient is φ = 708624000.

The previous prime is 2126490941. The next prime is 2126491009. The reversal of 2126490972 is 2790946212.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20472 + ... + 68352.

It is an arithmetic number, because the mean of its divisors is an integer number (206802358).

Almost surely, 2^2126490972 is an apocalyptic number.

It is an amenable number.

2126490972 is an abundant number, since it is smaller than the sum of its proper divisors (2836765620).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2126490972 is a wasteful number, since it uses less digits than its factorization.

2126490972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51589 (or 51587 counting only the distinct ones).

The product of its (nonzero) digits is 108864, while the sum is 42.

The square root of 2126490972 is about 46113.8913127053. The cubic root of 2126490972 is about 1285.9414080809.

It can be divided in two parts, 21264909 and 72, that added together give a triangular number (21264981 = T₆₅₂₁).

The spelling of 2126490972 in words is "two billion, one hundred twenty-six million, four hundred ninety thousand, nine hundred seventy-two".